Healthcare provider profile · identity verified

Stephen Howard Dyar, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · GREENVILLE, SC · NPI 1497883565

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Stephen Howard Dyar, MD received $53,988.50 in general payments during 2025 across 36 reported records.

Daiichi Sankyo Inc. accounted for 80.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

Eli Lilly and Company reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported VERZENIO as an associated drug or biological on 20 records involving 19 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Verzenio by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$53,988.50

36 reported records · 3 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $43,603.8480.8%292025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $10,329.6619.1%62025
Eli Lilly and Company Unresolved — no canonical attribution shown $55.000.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$50,850.0014
Consulting Fee$1,340.002
Food and Beverage$1,049.3713
Travel and Lodging$749.137

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
ENHERTU
Normalized: enhertu
Biological, Drug AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc. $43,049.23 29 2025
Source payment records
DATROWAY
Normalized: datroway
Biological, Drug AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc. $10,884.27 6 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Eli Lilly and Company
Exact reporting entity; no affiliate inference
2025 VERZENIO
open payments reported associated product
CMS Open Payments — General Payments
20 supporting records · 19 recipient NPIs · example record 1186470625
Verzenio · 2024
Exact normalized brand match · 1 Part D row
31 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
AnastrozoleAnastrozole560173
PrednisonePrednisone14144
Abiraterone AcetateAbiraterone Acetate11421
LetrozoleLetrozole9126
Ondansetron HclOndansetron Hcl8452
Prochlorperazine MaleateProchlorperazine Maleate5544
GabapentinGabapentin5316
Levothyroxine SodiumLevothyroxine Sodium4812
Lidocaine-PrilocaineLidocaine/Prilocaine4331
ExemestaneExemestane4112
Tamoxifen CitrateTamoxifen Citrate3914
IbrancePalbociclib38suppressed
XtandiEnzalutamide34suppressed
KisqaliRibociclib Succinate32suppressed
VerzenioAbemaciclib31suppressed
AcyclovirAcyclovir30suppressed
DexamethasoneDexamethasone2611
EliquisApixaban23suppressed
ErleadaApalutamide23suppressed
MirtazapineMirtazapine23suppressed
NubeqaDarolutamide23suppressed
Venlafaxine Hcl ErVenlafaxine Hcl23suppressed
ImbruvicaIbrutinib22suppressed
Pantoprazole SodiumPantoprazole Sodium22suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen21suppressed
EverolimusEverolimus20suppressed
Venlafaxine HclVenlafaxine Hcl20suppressed
LenalidomideLenalidomide19suppressed
LorazepamLorazepam1912
FluconazoleFluconazole18suppressed
HydroxyureaHydroxyurea18suppressed
Tramadol HclTramadol Hcl17suppressed
JakafiRuxolitinib Phosphate14suppressed
Warfarin SodiumWarfarin Sodium14suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Amlodipine BesylateAmlodipine Besylate11suppressed
OmeprazoleOmeprazole11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $53,988.50 · 36 records Daiichi Sankyo Inc. DATROWAY, ENHERTU 1
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error